3. See Trace Metals Analysis Specimen Collection and Transport
in Special Instructions for complete instructions.

Additional Information:
See Urine Preservatives-Collection and Transportation for
24-Hour Urine Specimens in Special Instructions for multiple
collections.

Specimen Minimum Volume

0.4 mL

Specimen Stability Information

Specimen Type

Temperature

Time

Urine

Refrigerated (preferred)

28 days

Ambient

28 days

Frozen

28 days

Reference Values

0-17 years: not established

≥18 years: ≤967 mcg/24 hours

Day(s) and Time(s) Performed

Tuesday, Thursday; 8 a.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

CPT Code Information

84630

LOINC Code Information

Test ID

Test Order Name

Order LOINC Value

ZNU

Zinc, 24 Hr, U

5765-3

Result ID

Test Result Name

Result LOINC Value

8591

Zinc, 24 Hr, U

5765-3

TM8

Collection Duration

13362-9

VL5

Urine Volume

3167-4

Test Classification

This test was developed and its performance characteristics
determined by Mayo Clinic in a manner consistent with CLIA
requirements. This test has not been cleared or approved by the
U.S. Food and Drug Administration.